OH so I’ve been racking my brain, trying for the life of me to figure out why the writers wouldn’t go with the emotional gold mine that is a de-aged Dean without his adult memories for the next episode, and why they’d go instead with the awkward adolescence is so funny haha route, and I realized. About a Boy is not about Dean.
It’s about Sam.
Sam, who has been taking on the protective big brother role all season, being confronted with this when he suddenly becomes the actual older brother. Sam, who as a child looked up to and glorified Dean, all at once realizing how young the Dean of his memories truly was. This season has been slowly disintegrating the deeply-ingrained, subconscious way that Sam has always viewed Dean as a father-figure instead of brother. This episode is going to shatter it.
Looks like it could be an emotional gold mine after all.